1 /* $NetBSD: vmparam.h,v 1.48 2020/02/01 19:41:48 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 37 * 38 * @(#)vmparam.h 7.3 (Berkeley) 5/7/91 39 */ 40 41 #ifndef _MACHINE_VMPARAM_H_ 42 #define _MACHINE_VMPARAM_H_ 43 44 /* 45 * Machine dependent constants for amiga 46 */ 47 48 /* 49 * Use common m68k definitions to define PAGE_SIZE and related constants. 50 */ 51 #include <m68k/vmparam.h> 52 53 /* 54 * USRSTACK is the top (end) of the user stack. 55 */ 56 57 #ifndef USRSTACK 58 #define USRSTACK 0x1E000000 59 #endif 60 61 /* 62 * Virtual memory related constants, all in bytes 63 */ 64 65 #ifndef MAXTSIZ 66 #define MAXTSIZ (32*1024*1024) /* max text size */ 67 #endif 68 #ifndef DFLDSIZ 69 #define DFLDSIZ (64*1024*1024) /* initial data size limit */ 70 #endif 71 #ifndef MAXDSIZ 72 #define MAXDSIZ (224*1024*1024) /* max data size */ 73 #endif 74 #ifndef DFLSSIZ 75 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 76 #endif 77 #ifndef MAXSSIZ 78 #define MAXSSIZ (32*1024*1024) /* max stack size */ 79 #endif 80 81 /* 82 * PTEs for mapping user space into the kernel for phyio operations. 83 * One page is enough to handle 16Mb of simultaneous raw IO operations. 84 */ 85 #ifndef USRIOSIZE 86 #define USRIOSIZE (1 * NPTEPG) /* 16mb */ 87 #endif 88 89 /* 90 * user/kernel map constants 91 */ 92 #define VM_MIN_ADDRESS ((vaddr_t)0) /* user min */ 93 #define VM_MAX_ADDRESS ((vaddr_t)(USRSTACK)) /* user max */ 94 #define VM_MAXUSER_ADDRESS ((vaddr_t)(VM_MAX_ADDRESS)) /* same */ 95 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 96 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)-(NPTEPG * PAGE_SIZE)) 97 98 /* 99 * virtual sizes (bytes) for various kernel submaps 100 */ 101 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 102 103 /* 104 * Our bootloader currently passes up to 16 segments (but this is variable) 105 * Normally, the biggest of them is used for the kernel, and the kernel 106 * segment is given to VM first. 107 */ 108 #define VM_PHYSSEG_MAX (16) 109 #define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM 110 111 /* 112 * Allow supporting Zorro-II memory as lower priority: 113 * 114 * - DEFAULT for Zorro-III memory (presumably 32 bit) 115 * - ZORROII for Zorro-II memory (16 bit, Zorro-II DMA) 116 */ 117 118 #define VM_NFREELIST 2 119 #define VM_FREELIST_DEFAULT 0 120 #define VM_FREELIST_ZORROII 1 121 122 #define __HAVE_PMAP_PHYSSEG 123 124 /* 125 * pmap-specific data stored in the vm_physmem[] array. 126 */ 127 struct pmap_physseg { 128 struct pv_header *pvheader; /* pv table for this seg */ 129 }; 130 131 /* 132 * number of kernel PT pages (initial only, can grow dynamically) 133 */ 134 #define VM_KERNEL_PT_PAGES ((vm_size_t)10) 135 #endif /* !_MACHINE_VMPARAM_H_ */ 136